Generation of mid- to far-infrared ultrashort pulses in 4-dimethylamino-N-methyl-4-stilbazolium tosylate crystal

Takuya Satoh, Yoshihiro Toya, Shunsuke Yamamoto, Tsutomu Shimura, Kazuo Kuroda, Yoshinori Takahashi, Masashi Yoshimura, Yusuke Mori, Takatomo Sasaki, Satoshi Ashihara

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7 Citations (Scopus)

Abstract

Mid- to far-infrared (IR) ultrashort pulses were generated using the organic nonlinear optical crystal 4-dimethylamino-N-methyl-4-stilbazolium tosylate. Frequency downconversion was performed by difference frequency generation (DFG) between the signal and idler pulses from an optical parametric amplifier. By the use of a noncollinear configuration in DFG, the phase matching condition was satisfied for pulse generation in the mid-IR and far-IR ranges. At a noncollinear angle of 0.7° between the signal and idler pulses, IR pulses with spectra extending from 8 to 30 THz were generated. The pulse energy and the temporal duration were estimated to be 300 nJ and 250 fs, respectively, for a signal wavelength of 1540 nm and a noncollinear angle of 0.7°.

Original languageEnglish
Pages (from-to)2507-2511
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume27
Issue number12
DOIs
Publication statusPublished - Dec 2010

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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